Sökning: "laser-beams"

Visar resultat 16 - 17 av 17 avhandlingar innehållade ordet laser-beams.

  1. 16. Spectral Management in Quasi-Phase-Matched Parametric Devices

    Författare :Mikael Tiihonen; Fredrik Laurell; Jean-Jaques Zondy; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; optical parametric devices; nonlinear optics; ultraviolet generation; mid-infrared generation; optical parametric oscillator; optical parametric generator; optical parametric amplifier; Optical physics; Optisk fysik;

    Sammanfattning : Nonlinear optical interaction in quasi-phase-matched structures opens up unique possibilities to build compact and efficient parametric devices such as optical parametric oscillators, generators, and amplifiers with tailored spectral properties. The focus of this thesis is on novel parametric interactions with periodically-poled KTiOPO4 (PPKTP) as the parametric gain medium. LÄS MER

  3. 17. Aspects of Heat Flow in Laser Processing of Metals

    Författare :Jesper Sundqvist; Alexander F.H. Kaplan; John Powell; Andreas Otto; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Produktionsutveckling; Manufacturing Systems Engineering;

    Sammanfattning : Since the laser was invented in 1960, its use in manufacturing industry has been growing rapidly. Laser processing of metals is based on the flow of heat that is generated by the absorbed laser beam. LÄS MER